Port 9790 in use - can't install MinimServer

[DSK]

1) With MinimServer 0.8.3.1 installed, uninstalled Java
2) Installed the faulty Java package
3) Uninstall MinimServer 0.8.3.1 - this works OK
4) Install MinimServer 0.8.3.4 - this fails with a message about Java not being installed or starting correctly
5) Uninstalled Java and re-attempted Java installation - unsuccessful
6) Updated DSM from 5.1 Update 1 to 5.2 Update 3 - successful
7) Uninstalled Java and re-attempted Java installation - unsuccessful
8) Patters updated the Java file to work
9) Uninstalled Java and installed Java - this time successfully
10) Install MinimServer 0.8.3.4 - still fails with a message that port 9790 is in use
11) Tried to re-install MinimServer 0.8.3.1 - fails with a message that port 9790 is in use

As best I can remember, this was the order of events. I also rebooted NAS and laptop after most install attempts.

FWIW all downloads were performed with latest FireFox browser.